Abstract: The present disclosure discloses an end-to-end stereo image compression method and device based on bi-directional coding, the method comprises: extracting inter-view information as prior from input left-view and right-view images by a neural network, sending the prior into left-view and right-view encoders simultaneously to jointly encode the input left-view and right-view images to generate left-view and right-view bit streams; and extracting inter-view information as the other prior from the generated left-view and right-view bit streams by the neural network, sending the other prior into left-view and right-view decoders simultaneously to jointly decode the left-view and right-view bit streams to generate reconstructed left-view and right-view images. The device comprises constructing a bi-directional coding structure for acquiring the bi-directional inter-view information and compress the stereo image based on the bi-directional inter-view information by the neural network.